Ultraviolet light stabilizers

ABSTRACT

((((2-R3,3-R4,4-R5,5-R6-PHENYL)-OOC-)PHENYL)-N(-R1)-)N-R2   WHERE Z REPRESENTS A PHENYLENE GROUP OR AN ALKYLIDENE GROUP HAVING UP TO 12 CARBON ATOMS. MANY OF THE COMPOUNDS WITHIN THIS GENERAL FORMULA ARE NOVEL PER SE, AND ACCORDING ARE CLAIMED AS SUCH.   -CO-Z-CO-   WHEREIN R1 REPRESENTS A HYDROGEN ATOM, AN ALKYL GROUP OR ACETYL GROUP, R3, R4, R5 AND R6 ARE THE SAME OR DIFFERENT AND EACH REPRESENTS A HYDROGEN ATOM, A HALOGEN ATOM, A HYDROXYL GROUP, AN ALKYL GROUP OR AN ALKOXY GROUP HAVING UP TO 12 CARBON ATOMS OR AN ARYL GROUP, N BEING 1 OR 2 AND, WHEN N=1, R2 IS A HYDROGEN ATOM, AN ALKYL GROUP, AN ACYL GROUP HAVING UP TO 20 CARBON ATOMS, A SUBSTITUTED OR NON-SUBSTITUTED AROYL GROUP, A PHENOXY CARBONYL GROUP OR A SUBSTITUTED OR NON-SUBSTITUTED BENZENE SULFONYL GROUP AND, WHEN N=2, R2 IS A SULFONYL, CARBONYL OR DIOXALOYL GROUP OR A GROUP HAVING THE FORMULA ULTRAVIOLET LIGHT STABILIZED POLYMERS HAVING INCORPORATED THEREIN A STABILIZING AMOUNT OF A COMPOUND HAVING THE GENERAL FORMULA:

"United States Patent 3,809,707 ULTRAVIOLET LIGHT STABILIZERS Reginoldus Havinga, Schalkhaar, and Pieter Dirk Swaters,

Lochem, Netherlands, assignors to Koninklijke Industrieele Maatschappij Noury & Van Der Lande N.V., Deventer, Netherlands No Drawing. Filed Aug. 27, 1970, Ser. No. 67,588 Claims priority, application Netherlands, Aug. 28, 1969, 6913138 Int. Cl. C11c 3/00 US. Cl. 260-404 39 Claims ABSTRACT OF THE DISCLOSURE Ultraviolet light stabilized polymers having incorporated therein a stabilizing amount of a compound having the general formula:

. a I R2 Q- -NR1 R3 4 11 wherein R represents a hydrogen atom, an alkyl group or an acetyl group, R R R and R are the same or where Z represents a phenylene group or an alkylidene group having up to 12 carbon atoms. Many of the compounds within this general formula are novel per se, and accordingly are claimed as such.

The present invention relates to ultraviolet light stabilizers, that is to say, compounds which provide stabilization against the deteriorative effects of ultraviolet light, and provides a new class of such compounds and processes for their preparation. The present invention also relates to processes for preparing stabilized polymers by means of the novel compounds according to the invention and of related compounds. Moreover, the invention relates to novel stabilized compositions.

It is known that polymers, such as polyethylene, polypropylene, polyisobutylene, copolymers of ethylene with higher alkenes such as propylene and butylene or with vinyl acetate, polystyrene, polyvinyl chloride, polyvinylidene chloride, copolymers of vinyl chloride with vinylidene chloride, polyvinyl acetate, polyester resins, polyurethanes, cellulose derivatives and other polymeric materials, may undergo degradation under the influence of ultraviolet light; this degradation takes the form of deterioration of the physical properties and/or of the color of the polymers.

It has now been found that this degradation may be reduced, or avoided, by incorporating in the polymers a stabilizing amount of one or more previously unknown compounds according to this invention, having the gen eral formula:

----NR; R3 R4 I1 wherein R represents a hydrogen atom, an alkyl group or an acetyl group, R and R are the same or different and each represents a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group having up to 12 carbon atoms or an aryl group, R and R are the same or different and each represents a hydrogen atom, a halogen atom, a hydroxy group, an alkyl or alkoxy group having up to 12 carbon atoms or an aryl group, n being 1 or 2 and, when n=1, R is an acyl group having up to 20 carbon atoms, a substituted or non-substituted aroyl group, a phenoxy carbonyl group or a substituted or non-substituted benzene sulfonyl group and, when n=2, R is a sulfonyl, carbonyl or dioxaloyl group or a group having the general formula where Z is a phenylene group or an alkylidene group having up to 12 carbon atoms.

Examples of novel compounds according to the above formula are:

( 1 phenyl-N-aoetyl-anthranilate (2) phenyl-p-N-acetyl aminobenzoate (3) phenyl-p-N-acryloyl-aminobenzoate (4) phenyl-N-tosyl-anthranilate (5) phenyl-p-N-tosyl-aminobenzoate (6) p-tert.butylphenyl-N-acetyl-anthranilate (7) p-nonylphenyl-N-acetyl-anthranilate (8 p-chlorophenyl-N-acetyl-anthranilate (9) p-phenylphenyl-N-acetyl-anthranilate (10) m-hydroxyphenyl-N-acetyl-anthranilate 1 1 phenyl-N-nonanoyl-anthranilate (12) phenyl-p-N-nonanoyl-aminobenzoate 13) phenylN-stearoyl-anthranilate (14) m-hydroxyphenyl-N-nonanoyl-anthranilate 15) phenyl-m-N-acetyl-aminobenzoate (16) phenyl-N-benzoyl-anthranilate (l7) phenyl-m-N-tosyl-aminobenzoate 18) m-octoxyphenyl-N-acetyl-anthranilate (19) phenyl-p-N-(4-dodecylbenzene-sulfonyl)aminobenzoate (20) phenyl-N-(4-chlorobenzoy1)anthranilate (21 phenyl-N- (4-cyanobenzoyl) anthranilate (22) phenyl-N-(Z-methoxybenzoyl)anthranilate (23) phenyl-N- 3-isopropylbenzoyl) anthranilate (24) phenyl-N- (4-tert.butylbenzoyl) anthranilate (25) phenyl-N-methyl-N-acetyl-anthranilate (26) 2-chloro-4-phenylphenyl-N-acetyl-anthranilate (27) 2,4,5-trichlorophenyl-N-acetyl-anthranilate (28) p-nonylphenyl-N-tosyl-anthranilate (29) N,N-bis(o-phenoxycarbophenyl)urea (30) N,N'-bis(o-phenoxycarbophenyl)oxalyl-diamide (3 l N,N'-bis(o-phenoxycarbophenyl) adipoyl-diamide 32) N,N-bis (p-phenoxycarbophenyl) sulfon-diamide (3 3 N,N'-bis (m-phenoxycarbophenyl) adipoyl-diamide (34) N,N'-bis (o-phenoxycarbophenyl)terephthaloyldiamide (35 N,N'-bis(o phenoxycarbophenyl) dodecanedioyldiamide (3 6) N,N'-bis [2- (4-tert.butylphenoxycarbo phenyl] adipoyl-diamide (37) N,N'-bis[2-(4-nonylphenoxycarbo)phenyl]adipoyldiamide (38) N,N'-dimethyl-N,N-bis(o-phenoxycarbophenyl) adipoyl-diamide (39) phenyl-N,N-diacetyl-anthranilate (40) phenyl-N-phenox'ycarbo-anthranilate (41) p-tert.octylphenyl- N-acetyl-anthranilate (-42) p-dodecylphenyl-N-acetyl-anthranilate (43) N-(2-phenoxycarbo)phenyl-N-phenyl-urea (44) phenyl-N-hexyl-N-acetyl-anthranilate These compounds and the compounds are referred to below, for convenience, by the numbers given in the left column.

The novel compounds of the General Formula I may be prepared, in accordance with another aspect of this invention, but reacting a compound having the general formula:

(II) CA HNRi with a compound having the general formula:

HO- -R it; is. (III) where R R R R and R have the meanings previously defined and A is a halogen atom or a hydroxy group, II preferably being an aminobenzoyl chloride, in an aqueous medium or an organic solvent, isolating the resultant compound of the formula:

Re 0 l -Q- HNR: 1 1a l h and converting it into an acid amide or a sulfonamide of Formula I.

The reaction is preferably carried out in the presence of an alkaline compound at a temperature from 0 C. to the boiling point of the solvent. Suitable solvents include benzene, dioxane, ethylene glycol dimethyl ether, chloroform, carbon tetrachloride, hexane and petroleum ether. If the aminobenzoyl chloride and the phenol, i.e. the compounds of Formulae II and III, are reacted in an organic solvent, pyridine, triethylamine and sodium carbonate may be used in alkaline compounds. The acid chloride, II, may be added per se or dissolved, preferably in the same solvent. if this reaction takes place in water, sodium hydroxide, potassium hydroxide, ammonium hydroxide or a water-soluble amine may also be used. The acid chloride is then added to the phenolic solution per se or dissolved in an organic solvent such as ethylene glycol dimethyl ether, dioxane or other water-miscible organic solvent.

Compounds according to the present invention wherein the amino group is in the ortho position relative to the ester carbonyl group may be advantageously obtained by starting from compounds having the general formula:

wherein R represents hydrogen or alkyl. The reaction with a phenol may be carried out in a solvent, e.g. dioxane, acetone, dimethyl sulfoxide, or tetrahydrofurane, in the presence of an alkaline compound such as potassium hydroxide or sodium hydroxide. While the carbon dioxide 4 is escaping, compounds are formed having the general formula:

HI IR I ls I'M The compounds of the Formulae [[V and VI may be isolate-d from the reaction mixture by removing the solvent used, e.g. by decantation, filtering or distillation.

After purification by appropriate methods, these compounds may be characterized by determining their physical constants such as melting point, refractive index and their characteristic infrared absorption bands.

Preferred reaction components which may be used include al kylated or non-alkylated isatoic anhydrides, alkylated or nonal kylated aminobenzoic acids and aminobenzoyl chlorides, phenol, p-tert.-butylphenol, p-nonylphenol, p-chlorophenol, p-dodecylphenol, p-phenylphenol, resorcinol and meta-octyloxyphenol.

The amino benzoyl chlorides to be used may be obtained in known manner by reacting the corresponding acids with chlorinating agents, such as POCI PCl PCl or SOCl The conversion of the compounds of the Formulae IV and VI to the corresponding acid amides or sulfonamides may be carried out in a dry solvent, such as benzene, carbon tetrachloride, chloroform, petroleum ether, hexane, diethyl ether, ethylene glycol dimethyl ether, dioxane, ethyl acetate or n-butyl acetate, preferably in the presence of an alkaline substance such as an amine, e.g. pyridine or triethylamine.

As acylating or sulfonating agents, there may be used acetyl chloride, acryloyl chloride, n-nonanoyl chloride, stearoyl chloride, benzoyl chloride, substituted benozyl chloride, p-toluene sulfonyl chloride, terephthaloyl chloride, sulfuryl chloride, oxaloyl chloride, succinoyl chloride, dodecanoic dichloride, phosgene and phenylchloroformate. Ketene or acetic anhydride may also be used as acetylating agents. After purification by appropriate methods, the acylated or sulfonated compounds may be characterized by determiinng their physical constants such as melting point or refractive index or their characteristic infrared absorption bands.

In addition to the novel compounds according to the invention, phenyl p-aminobenzoate, as described in Farmaco Ed. Sci. 12 (1957); phenyl anthranilate, as described in US. Pat. No. 3,123,631; phenyl N-methyl anthranilate, as described in J. Org. Chem. 24, 1214 (1959); phenyl p-N,N-diethyl-aminobenzoate, as described in German Pat. No. 1,115,252; p-alkyl phenylanthranilate, as described in US. Pat. No. 2,776,959; and p-alkyl phenyl-p-aminobenzoate, as described in French Pat, No. 1,253,378 may also be used in order to reduce or avoid the degradation of polymers by ultraviolet light. In this literature, it is not mentioned that these compounds may be used for avoiding degradation of polymers.

Consequently, the invention also relates to thestabilization of polymers with the aid of compounds having the General Formula I, wherein R to R have the meanings given and wherein R and R can each additionally represent an alkoxy group having up to 12 carbon atoms and wherein, when n=1, R can additionally represent a hydrogen atom or an alkyl group.

For use as UV absorbers, the compounds according to the present invention may be homogeneously incorporated in the polymers to be stabilized, if desired in the presence of other additives, e.g. plasticizers, pigments, heat stabilizers and lubricants, by known techniques such as roller mixing. They are preferably incorporated in the polymer in amounts of 0.15% by weight.

The following examples and tables illustrate the invention. Where in these examples and tables reference is made to characteristic infrared absorption bands, these are expressed in microns.

EXAMPLE I Yield percent 99 M.P. C 69.5-71 Charact. 1R abs.:

NH; band 2.82/2.92 O= ester band 5.90

21.3 g. of the phenyl anthranilate obtained, 8.64 g. of acetyl chloride (95%) and 400 ml. of n-hexane were heated under reflux for 3 hours. After cooling the mixture,

pressure. The crude p-aminobenzoyl chloride was incorporated in 100 ml. of dry benzene and added to a suspension of 23.2 g. of sodium phenolate in 250 ml. of dry benzene. The mixture was heated under reflux for 2 hours and after cooling, treated with water and a saturated soda solution. After drying the benzene solution was saturated with hydrogen chloride gas. The precipitate of phenyl-paminobenzoate hydrochloride obtained was centrifuged off. From the solid phase, 42.0 g. of phenyl-p-aminobenzoate was obtained with the aid of bicarbonate.

Yield percent 88 M.P. C.-- 168-171 Charact. IR abs.:

NH band 2.88/2.95 C=O ester band 5.88

In an analogous way, phenyl-m-aminobenzoate was obtained.

the precipitate was drawn ofi by suction. 25.4 g. of Com- Yield p 85 pound 1 were obtained, having the formula: C.-- 45.5-46.5

0 Charact. IR abs.: 1 NH band 2.89/2.96 C=O ester band 5.81

21.3 g. of the phenyl-p-aminobenzoate so obtained 11 were reacted with acetyl chloride in chloroform as solvent 0 in the way described in Example I. 24.0 g. of Compound Yield p 2 were obtained, having the formula: M.P. C 78-79 Charact. IR abs.: (H)

O=O ester band 5.85 I O=O amide band 5.92 a 1 Starting from phenyl anthramlate, in an analogous way, OH; the following compounds were obtained having the general formula: Yleld percent 94 O M.P. C.-- 137 Charact. IR abs.: C-O NH band 2.97 C=O ester band 5.78 HNR: C=O amide band 5.97

TABLE 1.Part 1 Aeylating agent orsulionating agent Solvent Base Product Toluene sulionyl chloride (tosyl chloride). Acetone Pyridine (4) r i Nonanoyl chloride Chloroform (11) Benzoyl chloride do (16) Steamy] ohlm'iflo do (l3) p-Chlorobenzoyl chloride. do Py'l'irllnfi (20) m-Isopropylbenzoyl chloride do do 23 .Meth xybenz y1 chloride do do (22) p-Cyanobenzoyl chloride do (21) Tert.buty1benzoyl chloride do o (24) henylnhloroforrnatn do KzCOs-O aq (40) Phenylisocy Benn-ma 43 l I TABLE 1.Part 2 Product R1 Physical constants Characteristic IR absorption bands 4 SO '0 H O M.P. 226229 C. NH, 3.01; C=O ester 5.89; S=O, 7.41/8.62/10.85. 1 oo'ctizii-ii p Liquid nD =r545a NH, 2.99; 0=0 ester, 5.89; 0:0 amide. 5.91. CcHs M.P. 166168.5 C- NH, 3.00; C=O ester, 5.92; 0:0 amide, 5.99. OC17Hz5-I1 M.P.5153 C... NH, 2.99; 0:0 ester, 5.90; G=O amide, 5.90. CQHACI- M.P. 130.5132.5 NH, 3.03; C=0 ester, 5.99; C=O amide, 5.99. C.H4CH( CHs):m M.P. 123-1Z4.5 C NH, 2.99; 0:0 ester, 5.90; O=O amide, 5.99. CsHaOCHz-O M.P. 9293.5 NH, 3.03; C=O ester, 5.82; C=O amide, 6.08. CH4CNp M.P. 166168 C Nlg 5%=0 ester, 5.96; C=O amide, 6.00. CQHAC(CHS)S D M.P. Nnfaoi'gc o ester, 5.90; o=o amide, 6.01. -OCcH5 M.P. 97.598 0. NH, 3.04; 0:0 ester, 5.91; G=O amide, 5.71. NHCcHs M.P. 153-157 C- NH, 3.04; C=O ester, 5.86; C=O amide, 6.01.

EXAMPLE II 27.4 g. of p-aminobenzoic acid were heated under reflux with 100 ml. of thionyl chloride for 2 hours and then the excess thionyl chloride was distilled off under reduced Starting from phenyl-m-aminobeuzoate, in an analogous way, Compound 15 was obtained, having the formula:

it Q -Q 7 Yield -percent 95 M.P. C.-- 134-135 Charact. IR abs.:

NH band 2.94 C=O ester band 5.82 C=-O amide band 5.90

Starting from the mor p-aminobenzoate, in an analogous way, the following compounds were obtained having 8- EXAMPLE.

14.5 g. of p-nonyl phenyl anthranilate and 4.7 g. of acetyl chloride were heated under reflux in 100 ml. of chloroform for 3 hours. After cooling and washing with water, the solvent was distilled 011'. 13.4 'g. of Compound 7 were obtained, having the formula the general formula: I 6

--C.O -C0H1o in HN-WCCHa HNR; (VIII) TABLE 2.-Part 1 I Acylating agent or sulionating agent Solvent Base Product Acryloylehloride chloroform a) p-Toluene sultonyl chloride. Diethylether Pyrlrline 1 (5) n-Nonanoyl chloride Ohloroform (12) p-Dodecylbenzene sulfonyl chloride Ethylene glycol dimethyl ether. Pyridine (19) p-Toluene sulfonyl chloride. Diethylether-. do (17) Product R2 Physical constants Characteristic IR absorption bands (3) OOOEOH, M.P. 115-120 c N13, 2(.)9%;1(()3=O ester, 5.79; c=o amide. 5.99; (5) sozotmcn, M.P.226229C NH, 3.00; C =O.ester, 5.81; s=o,7.45/s.e0/10.92. (12) Odin-n Semi-solid produet NH, 2.99; C =0 ester, 5.80; 0:0, amide, 6.04. (19) sozomlounfl M.P. 1s2-140 0-. NH, 3.02; c=o ester,5.80; s=o, 7.51/s.e5/10.95= (17) s 0,0.HH, M.P. rear-140 o NH, 3.07; o=o ester,5.75; s=o, 7.51 s.70/10.9s.

EXAMPLE III Yield percentn s2 0 8.1 g. of isatoic anhydride, 11.0 g. of p-nonylphenol t IR 95-98 and 1.1 g. of NaOH were heated under reflux in 50 ml. gfii b 1 3 02 of dioxane for 6 hours. After cooling, the reaction mixa t 1 3 -8 "f ture was poured into water. 16.3 g. of p-nonyl phenyl as a? g anthranilate were obtained, having the formula: a e a O A 40 I 1 Starting from the substituted phenyl anthranilates, de-

Yield "P v tained'having the general-formula:'-

Charact. IR abs.: 7 g a NH band ass/2.94 C=O ester band 5.89

Starting from other substituted phenols, in an analogous way, the following compounds were obtained, having the general formula:

3 1 t TABLE 4.-Part 1 7 V 7 R3 I x 7 Aeylating agent or e TABLE 3.Part 1 ,sulionating agent Solvent Base Product Substituted phenol Solvent Anthranilate Acetgl chloride Chlgroform ((6;

0 0 10 p-Tert.butyl- Dioxane p-Tert.butylphenyl-. 'Do. do (g) Resoreinol.-. I do.-- m-Hydroxyphenyl-. Do. (in a 9 p-Ohloro-- do-.- p-Chlorophenyl-. n-Nonanoyl chloride dn Pyridine (14) p-Phenyldo p-Phenylphenyl-. Abetyl chloride do (26) 2-ch1oro-4-phenyldo... I (2-chloro4-pheny1)-phenyl-;" Do... .-do Pyridine; (27) 2,4,5-trich1oro-. do-.. 2,4,5-trichlorophenyl-. Ketene Ben Arm 1g m-(n-)Oetoxydo m-(u-)Octoxyphenyl-. p-Toluenesulfonyl chloride...- Diethyl ether--. Pyridine (28) p-Tert.octy1-...-..... Acetone. p-Tert oetylphenyl-. Acetyl chloride chloroform... do (41) p-Dodecyl- Dloxane"--- p-Dodecy1pheny1-. Do. do (42)" TABLE 8.Part 2 if Physical Characteristic IR Rx constants absorption bands pO(CH M.P. 138140 C NHz, 2.85/2.93; C=0 ester, 5.88. m-OH M.P. 171174 C.-.-. Nlgfi28g2fi5; O=0 ester, 5.98; pCl M.P. 79-s0';51o NH|,'2.90/?;.00; c=o ester, 5.88. p-CuHsmn M.P. 142145 C NH, 2.85/2.95; C=O ester, 5.94. 2-C11-4C.H M.P. 107-109 0-- NH, 288/298; C=O ester, 5.96.

01 M.P. 129131 0---- NHz, 2.83/2.93; 0:0 ester, 5.85. f m-OC H NH, 2.85/2.95; C=0 ester, 5.90.

llgHn, 2.88/2.97; C=O ester, 5.90.1"

scribed in Example III, the following compounds were ob- TABLE 4.-Part 2 R. g Prisc constants Characteristic IR absorption bands p- C(CHa)a M.P. 163165 NH, 3.03; C=0 ester, 590; 0:0 amide, 5.98. m-OH M.P. 1745-177 0 Ng,H3.050;C=O ester, 5.90; 0:0 amide, 6.00; p-Cl M.P.107-111 c NH, 5.06; o=o ester, 5.89; o=0 amide, 5.92. p-CuH; M.P. 173.5-175.5 O... NH, 3.02; 0:0 ester, 5.90; C=0 amide, 5.99. m-OH Liquid NgIHBO6OC=O ester, 5.88; C=O amide, 5.90; 2-Cl-4-CIH5 M.P.142144.5 0...- NH, 2196; =0 ester, 5.85; c=o amide, 5.92. 2,4,5-Ch M.P. 140?143.5 0--.. NH, 2.99; C=0 ester, 5.88; C=O amide, 5.91. m-OCaHfl-n :P. 3 C=O ester, 5.89; C=O amide, 5.95.

3 C=O ester, 5.93; S=O, 7.50/8.60/10.85. 3 3; C=O ester, 5.90; C=O amide, 5 98 o=o ester, 5.86; c=o amide, 51931 EXAMPLE v 23.0 g. of N-methyl isatoic anhydride, 12.2 g. of phenol and 1.1 g. of powdered NaOH wereheated in 45 ml. of dioxane for 4 hours at 45 C. After'cooling, the reaction mixture was poured into water. The precipitate wasdrawn off by suction, washed and recrystallized from an-ethanolwater mixture in a ratio of 4: 1. 26.8 g. of phenyl-N-methyl anthranilate, having the formula below (R -=CH were obtained: i

HNR:

Yield percent 91 M.P. ".C-- 66 67 Charact. IR abs.:

NH band 2.90

C=O ester band 5.91

Starting from N-hexyl isatoic anhydride, in an analogous way, phenyl-N-hexyl anthranilate, having the Formula XI (R =C H was obtained.

Liquid product: n 1.5660 Charact. IR abs.:

NH band g 2.95 C=O ester band 15.94

2.27 g. of the' phenyl-N-methyl-anthranilate obtained, 0.86 g. of acetyl chloride, 0.83 g. of pyridine and 35 ml. of dry chloroform were heated under reflux for 3 hours. After the solvent had been evaporated,"washed'and recrystallized from hexane, 2.47 g. of Compound 25 having the formula below (R =CH were obtained:

Starting from phenyl-N-hexyl anthranilate, in an analogous way, Compound 44 of Formula XII =.H.. was obtained. n 7 Liquid product: u m.-. 1.5372 Charact. IR abs.:

O=O ester band 5.78 C=O amide band 6.05

EXAMPLE VI Ketene was passed into a solution of 21.3 g. of phenyl anthranilate, prepared in the way described .in Examplc I, and 100 mg. of p-tolu ene sulphonic acid in boiling toluene for 45 minutes. After the solvent had been evaporated and recrystallized from a mixture of acetone and hexane in a ratio of 1:1, 13.3 g. of Compound 39 of Formula XII (R =CH CO) were obtained.

Yield percent 45 M.P. C -87 Charact. IR abs.:

' C=O ester band 5.83 C=O amide band 5.91

EXAMPLE VII 8.5 g. of phenyl anthranilate, prepared in the way described in Example-I, 4.1 g. of terephthaloyl chloride, and 4.8 ml. of pyridine were heated under reflux in chloroform for 4 hours. .After cooling, the precipitate was drawn 01f by suction, washed with hydrochloric acid and water and recrystallized from chloroform. 10.1 g. of Compound 34 having the formula:

Q Q Q I 1:0 =0

were obtained.

Yield percent 91 M.P. C 1 22l-224 -Witl1 decomposition.

Charact. IR abs.:

NH band 3.01 C=O ester band 5.92 C=O amide band 5.99

Starting from phenyl anthranilate, in an analogous way, the following compounds were obtained, having the general formula:

TABLE 5.-Pert 1 .acylating agent or sulfonating agent Solvent Base Product Phosgene Diethyl ether. Pyridine (29) Oxalyl chloride--- Chloroiorm do-.. (30) Adipoyl chloride do ..do- (31) Dodecanoic dichloride do .do (35) TABLE 5.-Part 2 Product R: Physical constants Characteristic IR absorptionbands U H (29) \co M.P. 173 177 0...... NH, 3.00; o=o ester, 5.90; o'="o amide, 5.90.

(30) I A: M.P. 281283.5 C. 'NH, 3.05; C= ester,5.84; C O amide, 5.90.

C O 0 (decomposed).

(31) I M.P. 126-130 C NH 3.00 C=O ester 5.88 C=O mlde 5.92. co oH,) 4oo p T v a (35) I I M.P. 529-56 0 -NH 3.00; C=0 ester 5.90; C=O amid 5.90. -co(oH,)moo I EXAMPLE VIII 6.81 g. of phenyl-N-methyl anthranilate, prepared in the way described in Example V, 2.75 g. of adipoyl chloride and ml. of pyridine were heated under reflux in 50 ml. of chloroform for 4 hours. After cooling, the solution was washed with hydrochloric acid and then with water to neutrality. Afterthe solvent had been evaporated, petroleum ether was added and then the precipitate formed was drawn ofi. by suction and dried. 5.50 g. of Compound 38 having the formula:

were obtained.

Yield percent 65 M.P. C 140-145 Charact. IR abs.: I

C=0 ester band 5.81 C=O amide band 6.08

EXAMPLE 1x 5.0 g. of phenyl-m-aminobenzoate, obtained in the way described in Example H, 2.15 g. of adipoyl chloride and 5 ml. of pyridine were heated under refiuxin 50 ml. of chloroform for 4.5 hours. After cooling, the solution was washed with dilute hydrochloric acid and subsequently with water and a sodium bicarbonate solution .to neutrality. After the solvent had been dried and distilled off, the residue was incorporated in benzene, decolorized with carbon and again precipitated with petroleum ether. After filtration, 4.25 g. of Compound 33 having the general formula below were obtained: Y

Yield I percent-. 5 g;- 68 M.P. .C 153-1156 Charact. IR abs.: i1. NH band 2'; 9. 5 C=O ester band 5.85 C=O amide band 5.92

Starting from phenyl p aminobenzoate and sulfonyl chloride, in an analogous way, Compound 32 having the formula:

were obtained.

M.P. c 221-224 Charact. IR abs.:

- NH band 2.90 C=O ester band 5.81

EXAMPLE X 3.39 g. of p-nonylphenyl anthranilate, obtained in the was'described in Example III, 0.92 g. of adipoyl chloride and 5 ml. of pyridine were heated under reflux in 30 ml. of chloroform for 8 hours. After cooling and washing with water, the solvent was distilled off and recrystallized fromhexane. 2.84 -g. of Compound 37 having the formula given, below1(R C H were obtained.

analogous way, compound 36 of Formula XIV i was obtained. v

CharacLlR abs.:

.NH ,b' ndj- -lnii- 3- f ester 'b'and 5.89 C=Oamide band 5.92

13 EXAMPLE XI 100 g. of polyvinyl chloride, 35 g. of dioctyl phthalate, 2 g. of a commercially available barium-cadmium stabilizer which is a barium-cadmium-laurate-myristate mixture (Estabex BC-148) and 200 mg. of Compound 6 were mixed on a roll mixer at 180 C. until a homogenous, colorless, transparent sheet was obtained. This sheet was pressed to a uniform thickness of 0.2 mm. Subsequently, it was subjected to ultraviolet radiation in a Xenotester for 2000 hours. Next, the degradation was determined visually and rated according to numerical sealeranging from to 6, wherein the value 0 indicates that no degradation had taken place.

In an analogous way, the stabilizing power of other compounds according to the present invention was determined. The compounds used and the degradation measured are listed in Table 6.

TABLE 6 Compound: Degradation None (control) 6 (1) 1 /2 (45) 1% (4) 2 (5) 1 /2 (46) 3 (6) 1 (30) 1 /2 (47) 3 (10) 3 /2 (9) 3 (7 3 2 /2 (17) 2 /2 (27) 2 (31) IV: (33) 1 /2 (32) 1 (34) l (38) 2 (3) 1 (2) 1 (48) Y 3.. (49) 1 (3s 1 /2 (24) 1 /2 EXAMPLEXII 100 g. of high-density polyethylene were mixed with 250 mg. of Compound 7 and worked up on a roll mixer into a colorless, transparent sheet at a temperature of 120 C. This sheet was pressed to a uniform thickness of ate (Lucidol) and 0.2 g. of Compound 2 were mixed and poured into a sheet with a uniform thickness of 1 mm. This sheet was hardened for 2 hours at about 80-90 C. and subsequently subjected to ultraviolet radiation in a Xenotester for 2000 hours. Next, the degradation was determined in the way described in Example XI. This was 4. A sheet stabilized with Compound 1 and a non-stabilized sheet had a degradation of 4 and 6 respectively.

What is claimed is:

1. A compound having the general formula:

1 -NR; R4 n wherein R represents a hydrogen atom, a lower alkyl group or an acetyl group, R and R are the same or different and each represents a hydrogen atom, a chlorine atom, a hydroxy group, an alkyl group having up to 12 carbon atoms or a phenyl group, R and R are the same or different and each represents a hydrogen atom, a chlorine atom, a hydroxy group, an alkyl or alkoxy group having up to 12 carbon atoms or a phenyl group, n being 1 or 2, and when n=1, R is an alkanoyl or alkenoyl group having up to 20 carbon atoms, a substituted benzoyl group having a substituent selected from the class consisting of chlorine, lower alkyl and lower alkoxy groups, a phenoxy carbonyl group, and, when n=2, R is a carbonyl or dioxaloyl group or a group having the general formula wherein Z is a phenylene group or an alkylidene group having up to 12 carbon atoms.

degradation of the sheet, the carbonyl content was determined. This content was 0.11. A sheet stabilized with Compound 42 and a non-stabilized sheet had a carbonyl content of 0.12 and 0.40 respectively.

EXAMPLE x111 100 g. of polystyrene and 0.2 g. of Compound 1 were mixed on a roll mixer at 130 C. until a homogeneous, colorless, transparent sheet was obtained. This sheet was pressed to a uniform thickness of 0.2 mm. Subsequently it was subjected to ultraviolet radiation in a Xenotester EXAMPLE XIV 2. A compound according to claim 1, said compound being phenyl-N-acetyl anthra'nilate. i

3. A compound according to claim 1, said compound being phenyl-p-N-acetyl-aminobenzoate. i

4. A compound according to claim l said compound- 8. A compound according to claim 1, said compound being p-phenylphenyl-N acetyl-anthranilate.

9. A compound according to claim 1, said compound being m-hydroxyphenyl-N-acetyl-anthranilate.

10. A compoundaccording to claim 1, said compound being phenyl-N-nonanoyl-anthranilate.

11. A compound according to claim 1, said compound :being phenyl-p' nonanoyl-aminobenzoate.

g. of unsaturated polyester resin, 2 g. of a commercially available organic peroxide which is a mixture of benzoyl peroxide (50% by weight) and dimethylphthal- 12. A compound according to claim 1, said compound being phenyl N-stearoyl-anthranilate.

13. A compound according to claim 1, said compound being m-hydroxyphenyl-N-nonanoyl-anthranilate.

14. A compound according to claim 1, said compound being phenyl-m'N-acetybaminobenzo'ate.

15. A a compound according to claim 1, said compound being m-octoxyphenyl-N-acetyl-anthranilate.

16. A compound according to claim 1, said compound being phenyl-N-(4-chlorobenzoyl)anthranilate.

17. A compound according to claim 1, said compound being phenyl-N-(Z-methoxybenzoyl) anthranilate.

18. A compound according to claim 1, said compound being :ph'enyl-N-(3-isopropylbenzoyl)anthranilate.

19. A compound according to claim 1, said compound being phenyl-N-(4-tert.butylbenzoyl)anthranilate.

20. A compound according to claim 1, said compound being phenyl-N-methyl-N-acetyl-anthranilate.

21. A compound according to claim 1, said compound being 2-chloro-4-phenylphenyl-N-acetyl-anthranilate.

22. A compound according to claim 1, said compound being 2,4,5-trichlorophenyl-N-acetyl-anthranilate.

23. A compound according to claim 1, said compound being N,N'-bis(o-phenoxycarbophenyl)urea.

24. A compound according to claim 1, said compound being N,N-bis(o-phenoxycarbophenyl)oxaloyl-diamide.

25. A compound according to claim 1, said compound being N,N'-bis(o-phenoxycarbophenyl)adipoyl diamide.

26. A compound according to claim 1, said compound being N,N-bis (m-phenoxycarbophenyl adipoyl-diamide.

27. A compound according to claim 1, said compound being N,N' bis (o-phenoxycarbophenyl)terephthaloyl-diamide. I}

28. A compound according to claim 1, said compound being N,N'-bis(o-phenoxycarbophenyl)dodecanedioyl-diamide.

29. A compound according to claim 1, said compound being N,N' bis [2-(4-tert.'butylphenoxycarbo)phenyl] -adipoyl-diamide.

30. A compound according to claim 1, said compound being N,N-bis [2-(4-nonylphenoxycarbo phenyl] -adipoyl-. diamide.

31. A compound according to claim 1, said compound being N,N' dimethyl-N,N'-bis(o-phenoxycarbophenyD- adipoyl-diamide.

32. A compound according to claim 1, said compound being phenyl-N,N-diacetyl-anthranilate.

33. A compound according to claim 1, said compound being phenyl-N-phenoxycarbo-anthranilate.

34. A compound according to claim 1, said compound being p-tert.octylphenyl-N-acetyl-anthranilate.

35. A compound according to claim 1, said compound being p-dodecylphenyl-N-acetyl-anthranilate.

36. A compound according to claim 1, said compound being N-(2-phenoxycarbo)phenyl-N-phenyl-urea.

37. A compound according to claim 1, said com'pound being phenyl-N-hexyl-N-acetyl-anthranilate.

38. A process for preparing a compound of the formula according to claim 1, having the amino group in the ortho position relative to the ester carbonyl group, consisting HO.- R.

I h R4 1 Q wherein R R R and R have the meanings defined in claim 1, in an aqueous medium or an organic solvent at a temperature between 0 C. and the boiling point of the organic solvent used, in the presence of an alkaline compound, isolating the compound formed, and subsequently converting it into the corresponding acid amide by reacting same as such or in an organic solvent with an acyl chloride.

39. A process according to claim 38, in which the reaction is carried out in an organic solvent in the presence of potassium hydroxide, sodium hydroxide or an amine.

References Cited UNITED STATES PATENTS 9/1970 Luethi et a1. 260471 R 1/1970 Goldhamer et al. 260-471 R OTHER REFERENCES Finar, I. L.: Organic Chemistry, vol. V 1, (1963); pub. by Richard Clay v8i! CO., Ltd., England (QP251EF56); p. 202 relied on.

LORRAINE A. WEINBERGER, Primary Examiner L. A. THAXTON, Assistant Examiner Us. c1. X.R. 

